Important to note, there are four cups partaken during the Passover meal.
These cups are;
1)The Cup of Sanctification
2) The Cup of Judgment
3) The Cup of Redemption
4)The Cup of Praise
These four Cups represent the four expressions of deliverance promised by God Exodus 6:6-:
1)"I will bring out,"
2)"I will deliver,"
4) "I will take."
There is a fifth cup, not partaken of, which is called the cup of Elijah, This cup represents that the prophet Elijah, who is expected to come one Passover future.
Each year, the place is set at the Passover meal for Elijah who according to the Book of Malachi, will come BEFORE the great and dreadful day of the Lord:
"See, I will send you the prophet Elijah before that great and dreadful day of the LORD comes." Malachi 4:5
Realizing the importance of these cups, shows what transpired during the Passover meal known as "The Lord's Supper" and what it's prophetic meaning may be.
Luke 22:17 After taking the cup, he gave thanks and said, “Take this and divide it among you. 18 For I tell you I will not drink again from the fruit of the vine until the kingdom of God comes.
Note that the pending "Cup of Praise", which may indicate the Rapture, is also considered God's promise that , "I will take."!